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uses crt;
var a,b:array[1..100]of integer;
n,i,dem,max,tam,j:integer;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until (0<n) and (n<=100);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
writeln('Cac so chia het cho 4 la: ');
for i:=1 to n do
if a[i] mod 4=0 then write(a[i]:4);
writeln;
dem:=0;
for i:=1 to n do
if a[i] mod 7=0 then
begin
inc(dem);
b[dem]:=a[i];
end;
max:=b[1];
for i:=1 to dem do
if max<b[i] then max:=b[i];
writeln('So lon nhat chia het cho 7 la: ',max);
writeln('Cac chi so cua no trong day A la: ');
for i:=1 to n do
if max=a[i] then write(i:4);
writeln;
for i:=1 to n-1 do
for j:=i+1 to n do
if a[i]<a[j] then
begin
tam:=a[i];
a[i]:=a[j];
a[j]:=tam;
end;
writeln('Day so sau khi sap xep giam dan la: ');
for i:=1 to n do
write(a[i]:4);
readln;
end.
uses crt;
var a:array[1..100]of integer;
i,n,dem:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
dem:=0;
for i:=1 to n do
if a[i] mod 3=0 then
begin
inc(dem);
write(a[i]:4);
end;
writeln;
writeln('So phan tu chia het cho 3 la: ',dem);
readln;
end.
uses crt;
var a:array[1..250]of integer;
i,n,t:integer;
begin
clrscr;
readln(n);
t:=0;
for i:=1 to n do readln(a[i]);
for i:=1 to n do write(a[i]:4);
writeln;
for i:=1 to n do t:=t+a[i];
writeln(t);
readln;
end.
uses crt;
var n,i,t:integer;
begin
clrscr;
readln(n);
t:=0;
for i:=1 to n do
if i mod 2=1 then t:=t+i;
writeln(t);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
double a,b;
int main()
{
cin>>a>>b;
cout<<"a truoc khi doi la:"<<fixed<<setprecision(2)<<a<<endl;
cout<<"b truoc khi doi la:"<<fixed<<setprecision(2)<<b<<endl;
swap(a,b);
cout<<"a sau khi doi la:"<<fixed<<setprecision(2)<<a<<endl;
cout<<"b sau khi doi la:"<<fixed<<setprecision(2)<<b;
return 0;
}
uses crt;
var a:array[1..100]of integer;
i,n,t:integer;
begin
clrscr;
write('n='); readln(n);
if (n>0) and (n<=100) then
begin
t:=0;
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
if (a[i] mod 2=0) or (a[i] mod 2=1) then t:=t+a[i];
end;
writeln('tong cac phan tu chan hoac le trong day la: ',t);
end
else writeln('vui long nhap lai');
readln;
end.
1) Viet chuong trinh nhap xau S1, tao xau S2 bao gom tat ca cac ki tu da xoa het chu so trong xau S1
#include <bits/stdc++.h>
using namespace std;
string s1;
int d,i;
int main()
{
getline(cin,s1);
d=s1.length();
for (i=0; i<=d-1; i++)
if ((s1[i]<48) or (s1[i]>57)) cout<<s1[i];
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long t,i,n,x;
int main()
{
cin>>n;
t=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x<0) t=t+x;
}
cout<<t;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
string s1;
int d,i;
int main()
{
getline(cin,s1);
d=s1.length();
for (i=0; i<=d-1; i++)
if ((s1[i]>=48) and (s1[i]<=57)) cout<<s1[i];
return 0;
}
